Rosemary and Thyme

This is even dafter than Miss Marple, Murder She Wrote and Poirot.
Leaving aside the fact that nobody would employ the gardeners because somebody gets murdered on every job they do, today they had a strong hunch who was involved in two murders and failed to inform the police, but went off on their own. Well, at least the police are not portrayed as bumbling idiots who let the amateurs interrogate witnesses and then get all the suspects together to unmask the killer. (Yes, I know, I could always stop watching, but it was all sport on the other channels).